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01-02-2022 | Original Contribution

Factors associated with serum ferritin levels and iron excess: results from the EPIC-EurGast study

Authors: Lucía Iglesias-Vázquez, Victoria Arija, Núria Aranda, Elom K. Aglago, Amanda J. Cross, Matthias B. Schulze, Daniel Quintana Pacheco, Tilman Kühn, Elisabete Weiderpass, Rosario Tumino, Daniel Redondo-Sánchez, Maria Santucci de Magistris, Domenico Palli, Eva Ardanaz, Nasser Laouali, Emily Sonestedt, Isabel Drake, Lucía Rizzolo, Carmen Santiuste, Carlotta Sacerdote, Ramón Quirós, Pilar Amiano, Antonio Agudo, Paula Jakszyn

Published in: European Journal of Nutrition | Issue 1/2022

Abstract

Purpose

Excess iron is involved in the development of non-communicable diseases such as cancer, type 2 diabetes and cardiovascular conditions. We aimed to describe the prevalence of excess iron and its determinants in healthy European adults.

Methods

Sociodemographic, lifestyle, iron status, dietary information, and HFE genotyping were obtained from controls from the nested case–control study EPIC-EurGast study. High sensitivity C-reactive protein (hsCRP) was measured to address possible systemic inflammation. Descriptive and multivariate analyses were used to assess iron status and its determinants.

Results

Out of the 828 participants (median age: 58.7 years), 43% were females. Median serum ferritin and prevalence of excess iron were 143.7 µg/L and 35.2% in males, respectively, and 77 µg/L and 20% in females, both increasing with latitude across Europe. Prevalence of HFE C282Y mutation was significantly higher in Northern and Central Europe (~ 11%) than in the South (5%). Overweight/obesity, age, and daily alcohol and heme iron intake were independent determinants for iron status, with sex differences even after excluding participants with hsCRP > 5 mg/L. Obese males showed a greater consumption of alcohol, total and red meat, and heme iron, compared with those normal weight.

Conclusion

Obesity, higher alcohol and heme iron consumption were the main risk factors for excess iron in males while only age was associated with iron overload in females. Weight control and promoting healthy lifestyle may help prevent iron overload, especially in obese people. Further research is needed to clarify determinants of excess iron in the healthy adult population, helping to reduce the associated comorbidities.

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Title: Factors associated with serum ferritin levels and iron excess: results from the EPIC-EurGast study
Authors: Lucía Iglesias-Vázquez
Victoria Arija
Núria Aranda
Elom K. Aglago
Amanda J. Cross
Matthias B. Schulze
Daniel Quintana Pacheco
Tilman Kühn
Elisabete Weiderpass
Rosario Tumino
Daniel Redondo-Sánchez
Maria Santucci de Magistris
Domenico Palli
Eva Ardanaz
Nasser Laouali
Emily Sonestedt
Isabel Drake
Lucía Rizzolo
Carmen Santiuste
Carlotta Sacerdote
Ramón Quirós
Pilar Amiano
Antonio Agudo
Paula Jakszyn
Publication date: 01-02-2022
Publisher: Springer Berlin Heidelberg
Published in: European Journal of Nutrition / Issue 1/2022
Print ISSN: 1436-6207
Electronic ISSN: 1436-6215
DOI: https://doi.org/10.1007/s00394-021-02625-w

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